The Association of Surveyors of Papua New Guinea 23rd Survey Congress, June 26th - 29th, 1988. 

 - Lae :  [Association of Surveyors of Papua New Guinea],  1988. 
 - [106 leaves] :  ill., maps. 
<br/><br/> Cover title 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying--Papua New Guinea.<br/>Surveyors--Papua New Guinea.